Daily Sunspot Evaluation
Observation Sheet Monday, 11 February 1980
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 7
- Number of spots (f)
- 90
- Relative number (R)
- 160
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800211.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKO – 8 | 3 | 75W | 196 | 77W | 12 | |
| 2 | HSI – 10 | 27 | 33W | 154 | 35W | 4 | |
| 3 | DAI – 24 | 11 | 24W | 145 | 26W | 8 | |
| 4 | EKC – 11 | 9 | 71E | 50 | 69E | 13 | |
| 5 | ? – 4 | -18 | 80W | 201 | 82W | 14 | |
| 6 | FKC – 27 | -12 | 07W | 128 | 05W | 17 | |
| 7 | DSO – 6 | -13 | 10E | 111 | 08E | 8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.